0 Ceftezole Acid CAS 26973-24-0 In APIs, Pharmaceutical Chemicals, Products 26973-24-0,Ceftezole Acid,(6R,7R)-8-Oxo-7-[(1H-tetrazol-1-ylacetyl)amino]-3-[(1,3,4-thiadiazol-2-ylthio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid